vfs_defaultshaders.cc

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#include "core/vfs_defaultshaders.h"
 
#include "base/stringutils.h"
#include "log/log.h"
#include "io/vfs_path.h"
 
namespace eu::core
{
    void
    add_default_shaders(io::FileSystem* fs, const io::DirPath& base)
    {
        auto cat = io::ReadRootCatalog::create_and_add(fs);
        cat->register_file_string(
                base.get_file("sprite.vert"),
                R"STRING(
                #version 330 core
 
                in vec4 vertex; // <vec2 position, vec2 texCoords>
 
                out vec2 TexCoords;
 
                uniform mat4 model;
                uniform mat4 projection;
 
                uniform vec4 color;
                uniform vec4 region;
 
                void main()
                {
                    TexCoords = vec2(region.x + vertex.z * (region.y - region.x),
                                    region.z + vertex.w * (region.w - region.z));
                    gl_Position = projection * model * vec4(vertex.xy, 0.0, 1.0);
                }
            )STRING");
        cat->register_file_string(
                base.get_file("sprite.frag"),
                R"STRING(
                #version 330 core
 
                in vec2 TexCoords;
                out vec4 outColor;
 
                uniform sampler2D image;
                uniform vec4 color;
 
                void main()
                {
                    outColor = color * texture(image, TexCoords);
                }
            )STRING");
    }
}